To make a metal feature, a non-plateable layer is applied to a workpiece
surface and then patterned to form a first plating region and a first
non-plating region. Then, metal is deposited on the workpiece to form a
raised field region in said first plating region and a recessed region in
said first non-plating region. Then, an accelerator film is applied
globally on the workpiece. A portion of the accelerator film is
selectively removed from the field region, and another portion of the
accelerator film remains in the recessed acceleration region. Then, metal
is deposited onto the workpiece, and the metal deposits at an accelerated
rate in the acceleration region, resulting in a greater thickness of
metal in the acceleration region compared to metal in the non-activated
field region. Then, metal is completely removed from the field region,
thereby forming the metal feature.